包含工业生产过程碳排放的产业部门隐含碳研究

Analysis on Embodied CO_2 Emissions Including Industrial Process Emissions

目前基于消费的隐含碳排放核算中主要计算的是能源消费导致的CO2排放,而不考虑水泥等工业生产过程中的CO2排放以及由此引发的其它产品中的隐含碳排放。本文对利用投入产出方法计算隐含碳排放的框架进行了扩展,从而可以同时计算各部门由能源消耗导致的隐含碳排放和由某些工业生产过程导致的隐含碳排放,并利用该框架计算并分析了2002年中国各部门最终消费和使用中的隐含碳排放情况。结果发现,建筑业是隐含碳排放最高的部门,而非金属矿物制品业的生产过程隐含碳排放占部门总隐含碳排放的比重最高。此外,研究发现,部门分类水平的粗细对于各部门生产过程隐含碳排放的核算结果具有较大的影响,除了建筑业之外,其他部门在较粗分类下核算的生产过程隐含碳排放偏高。而比较不同部门的隐含碳比重和增加值比重发现,建筑业耗用了大量的碳排放而产生的增加值较低,其他社会服务业则相反。

The analysis of enbodied CO2 emissions based on consumption calculates most the CO2 emissions from energy consumption, and ahnost neglects the CO2 emissions from industrial process such as the cement production process and the resulting enbodied CO2 emissions in other sectors. Using the input-output analysis, the paper extends the framework of embodied CO2 emission analysis, thus including both the enbodied CO2 emissions from energy. consuruption as well as from industrial process. Then the embodied CO2 emissions in the final consumptions and usage of products from each sector in China in 2002 are calculated by this framework. It is found that the construction sector has the highest embodied CO2 emissions, and the non-metallic mineral products sector has the highest proportion of embodied CO2 emissions from industrial process. The embodied CO2 emissions from industrial process of each sector vary a lot under different levels of sectors classification, and most sectors will get higher resuhs trader rough classification except the construction sector. By comparing the embodied CO2 emissions proportion with added value proportion of each sector, it is found that the construction sector creates low added value while diseharging a lot of CO2 emissions, but the other social service sector is on the opposite.